"The Russian energy power grid has a high level of security," the ministry said in a statement, noting that most of the critically important facilities are connected to the state defense system. "Systemic and successful work is being carried out to use Russian technology and equipment to eliminate such risks."
Peskov echoed that statement, but also said that "vitally important spheres of our economy have been targeted with cyberattacks from abroad."
"We have said it many times that our relevant agencies are constantly fighting against them in order to make sure these attacks inflict no damage on our economy and sensitive spheres," he said.
Putin has tried repeatedly "to initiate international cooperation in order to jointly counter all forms of cybercrime," Peskov added, but he said the United States had not responded.
US intelligence agencies say that in fact, Russia is a major source of cybercrime and state-directed intrusion into American systems. Investigators have reported that Russian intelligence agents tried to gain access to American voting systems before the 2016 election, and in some cases succeeded.
Energy power grids have recently turned into an international battlefield. Trump and Congress gave new authority last year to the US military's Cyber Command, but two administration officials told The Times that they did not think the president had been told in detail about efforts to penetrate Russia's energy systems.
Russian foreign policy commentators said that the report about U.S. efforts to insert software code into Russia's energy system might jeopardise a potential Putin-Trump meeting at the G20 Summit in Japan at the end of June.
"This is a direct challenge that Moscow cannot leave unanswered," Ruslan Pukhov, an arms expert and head of the Center for Strategies and Technologies, told Kommersant, a Russian business daily.
The two leaders might meet briefly on the sidelines of the summit, Peskov said, adding that Washington had not reached out to Moscow to organise a full-scale meeting.
Written by: Ivan Nechepurenko
© 2019 THE NEW YORK TIMES